Installed plugins are not recognized

[argyrodagdileli]

Hi,

I've been playing around with the project to familiarize my self with Rundeck, but I've been having issues installing plugins.
Namely - when I install a plugin I get the message that it was installed successfully but it doesn't appear under the installed plugins and I cannot use it.
When I go back to the plugins available for installation I can see the plugin as it was never installed.

Steps to reproduce

1. Navigate to Plugins -> Find Plugins
2. Search for a plugin e.g. PagerDuty Notification
3. Click Install
4. Wait for the installation to complete.
5. Verify that the Uninstall option appears.
   
6. Refresh the page
7. Verify that the Install option appears again under the plugin
   

What is weird is that the plugin .jar file appears under the /home/rundeck/libext folder

docker exec rundeck ls /home/rundeck/libext
<output omitted>
pagerduty-notification.jar
<output omitted>

Any ideas? Am I missing something?

[argyrodagdileli]

Okay it looks like during startup the plugin directory watcher fails to start - any ideas?

Failed to start plugin dir watcher
java.io.IOException: Function not implemented
        at java.base/sun.nio.fs.LinuxWatchService.<init>(LinuxWatchService.java:64)
        at java.base/sun.nio.fs.LinuxFileSystem.newWatchService(LinuxFileSystem.java:47)
        at com.dtolabs.rundeck.core.plugins.WatchingPluginDirProvider.lambda$startFolderWatch$0(WatchingPluginDirProvider.java:45)
        at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
        at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
        at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
        at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:829)